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37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
#pragma once
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#include <Interpreters/IJoin.h>
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namespace DB
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{
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struct ColumnWithTypeAndName;
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class Block;
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class IColumn;
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using ColumnRawPtrs = std::vector<const IColumn *>;
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namespace JoinCommon
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{
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void convertColumnToNullable(ColumnWithTypeAndName & column);
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void convertColumnsToNullable(Block & block, size_t starting_pos = 0);
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void removeColumnNullability(ColumnWithTypeAndName & column);
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Columns materializeColumns(const Block & block, const Names & names);
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ColumnRawPtrs materializeColumnsInplace(Block & block, const Names & names);
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ColumnRawPtrs getRawPointers(const Columns & columns);
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void removeLowCardinalityInplace(Block & block);
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/// Split key and other columns by keys name list
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ColumnRawPtrs extractKeysForJoin(const Names & key_names_right, const Block & right_sample_block,
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Block & sample_block_with_keys, Block & sample_block_with_columns_to_add);
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/// Throw an exception if blocks have different types of key columns. Compare up to Nullability.
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void checkTypesOfKeys(const Block & block_left, const Names & key_names_left, const Block & block_right, const Names & key_names_right);
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void createMissedColumns(Block & block);
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void joinTotals(const Block & totals, const Block & columns_to_add, const Names & key_names_right, Block & block);
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}
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}
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